Source : Webster's Revised Unabridged Dictionary (1913)

Patas \Pa*tas"\, n. (Zo["o]l.)
   A West African long-tailed monkey ({Cercopithecus ruber});
   the red monkey.

Source : WordNet®

patas
     n : reddish long-tailed monkey of west Africa [syn: {hussar
         monkey}, {Erythrocebus patas}]